Jumbo? The plane exploded (8)
I believe the answer is:
elephant
'jumbo?' is the definition.
(thesaurus)
'the plane exploded' is the wordplay.
'exploded' indicates an anagram.
'the'+'plane'='theplane'
'theplane' anagrammed gives 'ELEPHANT'.
(Other definitions for elephant that I've seen before include "Creature" , "African or Inidan pachyderm" , "Endangered Species" , "I'll never forget" , "The animal that never forgets" .)